#include <iostream>
#include <iomanip>  // manipulation控制
using namespace std;

int main() {
    cout.setf(ios::left);

    cout << "我们将打印大写字母表\n";
    for (int i = 0, ch = 65; ch < 91; i++, ch++) {
        cout << setw(6) << (char)ch;

        // 0, 1, 2, 3 ..., 6 每7个换行
        if (i % 7 == 6) {
            cout << "\n";
        }
    }
    cout << "\n";
}